Choosing a signal spectrum analyzer for a repair bench is different when both candidates are sold as parts-only instruments. You are not comparing two calibrated, ready-to-measure units; you are comparing two repair projects with different budgets, failure points, and final capabilities. In the oscilloscopes signal spectrum analyzers category, the real question is which non-working unit brings the features you need at a risk level you can accept.
Quick verdict
The lower-priced Aeroflex IFR Marconi 2390 / AN930A is the more sensible project when you already know how to handle an EEPROM configuration failure after a controller swap. The Agilent N9010A is the more capable starting point when you need an RF signal analyzer platform and can accept a longer, less predictable repair process.
Side-by-side comparison
| Product | Price | Frequency rating | Condition |
|---|---|---|---|
| Aeroflex IFR Marconi 2390 / AN930A 22Ghz Spectrum Analyzer TRK GEN PARTS ONLY | USD 299.95 | 22 GHz | For parts or not working |
| Agilent N9010A /507 /B25 /PFR EXA RF Signal Analyzer, 9 KHz to 7 GHz | USD 4,111.00 | 9 kHz to 7 GHz | For parts or not working |
Where each product wins
The Aeroflex wins on entry cost and a clearly identified failure point: it powers up and boots, with a good display, power supply, and controller, but the wrong configuration EEPROM stops testing. That makes it a tempting donor for someone who wants a lower-cost repair project with a narrow failure window.
The Agilent wins on the extent of the platform: it carries the /507, /B25, and /PFR options along with multiple N9060A and N9073A measurement options. That breadth of installed capability is the reason to take on a larger repair bill.
Product notes
Aeroflex IFR Marconi 2390 / AN930A 22Ghz Spectrum Analyzer TRK GEN PARTS ONLY
The Aeroflex is the lower-priced entry into a 22 GHz spectrum analyzer with a tracking generator factory option. It is physically complete and powers up with a good display, power supply, and controller, so the reported failure is narrow: the configuration EEPROM was not moved when the controller was replaced. If you already have the correct EEPROM or a service path for it, that narrow failure point is the reason to consider this unit. The limitation is that it is sold for parts only and testing fails, so there is no working signal trace until the configuration issue is corrected. Treat it as a targeted repair project for someone with the right service documentation, not as a drop-in analyzer.
Agilent N9010A /507 /B25 /PFR EXA RF Signal Analyzer, 9 KHz to 7 GHz
The Agilent is the larger project but also the larger opportunity. It is an EXA RF signal analyzer covering 9 kHz to 7 GHz, with installed /507, /B25, and /PFR options plus N9060A-2FP, -3FP, -4FP, and N9073A-1FP options. If you are building a service bench around the EXA platform, those options are the reason to take on the unit. The downside is spelled out in its condition: it does not display a signal trace, reports alignment and measurement errors, has a missing front-panel 3 key, and carries a long error log. It is untested and sold as-is, so budget for a deeper diagnostic phase before you see any signal.
Final choice by use case
If you want a parts-only spectrum analyzer project with a narrow failure point and a $299.95 cash outlay, the Aeroflex IFR Marconi 2390 / AN930A is the starting point. If you need the N9010A EXA platform and can absorb a $4,111 repair project, the Agilent is the more capable candidate. Match the repair work you can actually take on, and the right parts-only signal analyzer becomes clear.
